Struct lpc845_pac::capt::ctrl::W[−][src]

pub struct W(_);

Expand description

Register CTRL writer

Implementations

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impl W

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pub fn pollmode(&mut self) -> POLLMODE_W<'_>

Bits 0:1 - Mode of operation. May only change from 0 to another value. So, if 2 or 3, must be changed to 0 1st. Any attempt to go from non-0 to non-0 will result in 0 anyway.

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pub fn type_(&mut self) -> TYPE_W<'_>

Bits 2:3 - Selects type of Touch arrangement to use and so how to handle XPINSEL bits

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pub fn trigger(&mut self) -> TRIGGER_W<'_>

Bit 4 - This selects what is being used as the trigger

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pub fn wait(&mut self) -> WAIT_W<'_>

Bit 5 - If 0, the block will continue its X based measurements, even if the TOUCH register has not been read (and so could OVERRUN). If 1, it will wait until read when a touch (TOUCH’s ISTOUCH bit is set) before starting the next. This should not normally be needed.

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pub fn dma(&mut self) -> DMA_W<'_>

Bits 6:7 - If not 0, will use the DMA to read out touch events from TOUCH register. The values are shown below. This may be changed while active.

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pub fn fdiv(&mut self) -> FDIV_W<'_>

Bits 8:11 - Functional clock divider, or 0 if no divide. The term “clocks” in this spec then refer to divided clocks. For a 12MHz input (e.g. FRO 12MHz), this would normally be set to generate a 4MHz output (so, 2). For a 1MHz input, it should be 0. Note for internal use: this does not produce a 50/50 duty cycle when non even divide.

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pub fn xpinuse(&mut self) -> XPINUSE_W<'_>

Bits 12:13 - Controls how X pins selected in XPINSEL are used when not active in the current polling round.

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pub fn xpinsel(&mut self) -> XPINSEL_W<'_>

Bits 16:31 - Selects which of the X pins are to be used within the allowed pins - see XMAX in STATUS. The X pins are mapped via the IOCON (as are the YH and YL pins) to physical pads. So, this only selects which are to be used as the X half of the touch element. Note: when polling, these are “walked” (active) one at a time. When using POLLNOW, the 1 or more selected are used at the same time. Likewise, when in low-power mode, they are used at the same time (or small groups). X pads not selected by XPINSEL are kept at High-Z if they are connected to a pad. This allows using controlled sets for touch detection based on context.

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